Electrical condenser



July 5, 1932. A. NYMAN ELECTRICAL; CONDENSER Filed June 24, 1926 INVENTOR drank/'1)? 1e {PLM Z ATTORNEY Patented July 5, 1932 UNITED STATES ALEXANDER NYMAN, OF NEW YORK, N. Y.,

PORATION, 013 NEW YORK, N. Y.,

ELECTRICAL Application fled June 24,

This invention relates to improvements in electrical-condensers, particularly electrical condensers which are made by rolling or winding conductive elements separated by r c A I .5 1nsulat1on, 1nto a compact body to be given the required size and shape.

An object of my invention is to provide an electrical condenser which can be produced by winding sheets of metal foil separated by 10 insulation in the form of sheets of rubberized cloth. Paper is frequently employed in condensers of this description and I find that by the substitution of rubberized cloth, the insulation losses of the condenser can be reduced and a su erior condenser is afforded.

denser can be made up according to my invention, and

Figures 2 and 3 show types ofsuch condensers in finished form.

In practice, rubberized cloth, which may be muslin covered with rubber in uncured form, is wound up on reels 1 from which the rubberized cloth in the form of sheets is drawn as indicated at 2.

The numerals 3 in Figure 1 indicate similar rolls or reels of metal foil in the form of sheets or strips 4. The rolls 1 alternate with the rolls 3 so that the sheets or strips of metal foilwith the insulating cloth between them can be secured to arod and wound up thereon; one of the strips of 4 bein the innermost layer, with the insulation Tmtween the foils, and'a strip or sheet 2 of insulation being wound up on the outside of the body of the condenser on the rod 5.

The cloth 2 with the rubber thereon un cured can be employed-for the reason that PATENT OFFICE ASSIGNOR TO DUBILIER bONDENSEB 003- A CORPORATION OF DELAWARE CONDENSER 1986. Serial No. 118,310.

the rubber can be vulcanized after the con-tdenser is finished, provided the metal foil 4 will stand the necessary temperature. Of

course, as many sheets of foil and sheets of cloth will be included as requiredto give the condenser the necessary capacity.

A ,condenser of this type may formed by winding or rolling in the usual way now employed to produce rolled or wound condensers. When suflicient metal foil and rubberized cloth is wound upon the rod'5, the strips are cut and the body of the condenser on the rod is removed and finished. In the course of finishing, it may be pressed to im part to it the shape shown in Figure 2 and part of the sheets of foil 4 of one polarity will be connected to one terminal 7, projecting out of the body of the condenser 6; and

the sheets of foil 4 of opposite polarity will be joined to a similar projecting terminal 8.

If desired, the condenser may be sowound that the edges of the sheets of foil project at opposite ends, as indicated in Figure 3, so

that the terminals of a. circuit in which this condenser is to operate, can be attached to the projecting edges of the rolled sheets 4;

By the inclusion of rubberized cloth instead of aper I secure an insulating material whic than paper, is more durable than paper and makes the losses in the condenser smaller.

In practice the rubberized cloth will be wound up to a slight extent on the rod 5 before the winding of the sheets of foil 4 commences. This method will cover the rod 5 with the rubberized cloth 2 before the winding of the sheets of foil 4 begins thereon and thus the ends of the sheets 4 are properly tect by Letters Patent of the United States has .a higher dielectric constant ments separated by a sheet of fibrous insulatring material, and having a filler of rubber comprising in combination with said fibrous materal dielectric means for the condenser.

2. A condenser comprising a roll of foils of opposite polarity separated by strips of insulating fabric, and a rubber filler permeating said insulating fabric and the interior 01" the condenser body and comprising in combination with the fabric dielectric means for the condenser.

8. A condenser comprising a roll of foils of opposite polarity separated by strips of fibrous insulating material, and a rubber filler permeating said insulating material and the interior of the condenser body and comprising in combination with the fibrous material dielectric means for the condenser, the rubber being vulcanized to form an integral unit.

In testimony whereof I afix my signature.

ALEXANDER NYMAN. 

